NGK 2309 Spark Plug

NGK Iridium IX Spark Plug Overview

The NGK Iridium IX Spark Plug 2309 is engineered for reliable ignition performance in Mitsubishi Lancer vehicles. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Iridium center electrode tip for enhanced durability and ignition
• Taper cut ground electrode tip design for improved spark exposure
• Copper core center electrode for optimal conductivity
• Standard ground configuration with nickel ground electrode core
• Non-removable nut electrical terminal type for secure connection
• Pre-gap size of 0.032 inches for precise spark gap
• Flat seat type with 14mm thread diameter and 26.5mm reach
• Hex size of 5/8 inch for installation compatibility
• Manufacturer heat range rating of 7

Detailed Description of NGK Iridium IX Spark Plug 2309

The NGK Iridium IX Spark Plug 2309 features a fine iridium center electrode tip that enhances ignition efficiency and wear resistance. The copper core center electrode improves electrical and thermal conductivity, supporting stable combustion in the Mitsubishi Lancer engine. The taper cut ground electrode tip design increases spark exposure, which can contribute to better throttle response and smoother engine operation. With a standard ground configuration and nickel core ground electrode, this spark plug balances durability and performance. The non-removable nut electrical terminal ensures a secure and reliable connection during installation and use.

The spark plug’s pre-gap size of 0.032 inches is factory set to optimize spark timing and combustion. Its flat seat type and 14mm thread diameter with a 26.5mm reach make it compatible with the specified Mitsubishi Lancer models. The hex size of 5/8 inch allows for straightforward installation using common tools. The manufacturer heat range of 7 indicates suitability for a range of operating conditions, helping to prevent fouling and overheating.

About the NGK Iridium IX Spark Plug Line

The Iridium IX Spark Plug line by NGK is designed to provide enhanced ignition performance through the use of iridium, a durable and heat-resistant metal. This product line focuses on delivering consistent spark and improved throttle response compared to conventional spark plugs. The 2309 part number within this line is tailored for secondary ignition applications in vehicles like the Mitsubishi Lancer, combining advanced electrode materials and precise design features to support engine efficiency.

Common Applications and Issues Addressed

• Replacement for worn or fouled spark plugs in Mitsubishi Lancer engines
• Improves ignition reliability and combustion stability
• Helps reduce engine misfires and rough idling
• Supports better throttle response and fuel efficiency
• Addresses spark plug wear due to high mileage or harsh conditions

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.032 inches before installation if adjustment is needed
• Use a 5/8 inch socket wrench for proper tightening
• Apply anti-seize compound sparingly on threads if recommended by vehicle manufacturer
• Torque to manufacturer specifications to avoid damage to the spark plug or cylinder head
• Inspect ignition components for wear or damage during replacement

Quality Assurance and Warranty

NGK spark plugs, including the Iridium IX 2309, are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, NGK products typically come with a limited warranty against manufacturing defects. Using genuine NGK parts ensures compatibility and reliability for your Mitsubishi Lancer’s ignition system.